Add Windows integration tests showing that subst is handled inconsistently
#6069
| Job | Run time |
|---|---|
| 1m 18s | |
| 54s | |
| 3m 35s | |
| 5m 47s |
subst is handled inconsistently
#6069
| Job | Run time |
|---|---|
| 1m 18s | |
| 54s | |
| 3m 35s | |
| 5m 47s |